Tooling system
A tooling system in a press for forming a product from a blank of material disposed between a punch assembly and a die assembly and a method of using the same. The tooling system comprises a knockout and a bushing. The knockout further comprises a shaft having opposed ends, a plate fixed to one opposed end, and a tapered portion. The bushing is supported by one of the punch and die assemblies and defines a lumen configured to slidably receive the shaft for axial movement between an extended position and a retracted position. The lumen has a tapered receiving section at one end thereof configured to mate with the tapered portion of the knockout when the shaft is in the extended position.
1. A bushing for a die press having a base supporting a die and a knockout, the knockout being axially moveable between retracted and extended positions on a knockout shaft having a tapered end opposite the knockout, the bushing comprising:
a tubular segment defining an axial bore for slidably receiving the knockout shaft, the axial bore having a flared end for matingly receiving the tapered end of the knockout shaft when the knockout is in the extended position; and
an integral flange radially extending from the tubular segment and having spaced bores for removably fixing the bushing to the base.
2. The bushing of claim 1 , wherein an axial length of the flared end is longer than an axial length of the tapered end of the knockout shaft.
3. The bushing of claim 1 , wherein an interface between the axial bore and the flared end is defined by an annular step perpendicular to the longitudinal axis.
4. The bushing of claim 1 , wherein the flared end has the shape of a truncated cone.
5. The bushing of claim 1 , wherein the flared end has the shape of a truncated right triangular pyramid.
6. The bushing of claim 1 , wherein the flared end has the shape of a truncated right rectangular pyramid.